Main contents of revisions are as follows:
PART
TWO HULL
1)
Incorporation of IACS mandatory requirements: clarifying requirements for small
hatches on container ship giving access to a cargo hold in accordance with IACS
UR S26 (Rev.5); adjusting requirements for minimum thickness of the plate of
sea-going ships with L<65m in accordance with IACS UR S3 Rev.2; revision
made in accordance with IACS UR S21 Rev.6. UR S21 Rev.6 integrates the original
UR S21A and UR S21, applicable to a wide range of hatch cover requirements;
fully incorporating newly released IACS UR S35, which gives general process of
buckling assessment; revising relevant requirements for rudders in accordance
with IACS UR S10 (Rev.7); adding mooring and anchoring requirements for tugs
under 45 m in length intended for towing service only or for ships of length
less than 90 m in accordance with IACS UR A1 (Rev.8); revising the guidelines
for calculation of bending moment and shear force distribution of rudder-rudder
stock in accordance with IACS UR S10 (Rev.7); incorporating requirements of IACS
Rec.10 (Rev.5), as an alternative, direct force calculation may be performed to
determine the necessary anchoring equipment for monohull ships with length less
than 90m.
2) Revision of
technical requirements: revising technical requirements for butt weld of plates
of different thicknesses; further clarifying the specified value of thickness of the
plate keels of ships in restricted service to avoid ambiguity; deleting
technical requirements for occasionally carrying bulk cargo; revising the
definition of a bulk carrier applicable to the chapter on bulk carriers as a
typical bulk carrier, along with corresponding revisions; adding technical
requirements for external glass balustrades, with provisions for glass
material, thickness and connection means.
PART
THREE MACHINERY
INSTALLATIONS
Revising requirements for valve type on collision bulkhead in
accordance with resolution MSC.474(102); adding the condition where the generator electrical degree is not limited
to 3.5°.
PART FOUR ELECTRICAL
INSTALLATIONS
Clarifying requirements when
vehicles with fuel in their tanks for their own propulsion are carried in
ordinary cargo spaces; revising requirements for electrical equipment of
certified safe type when carrying ammonium nitrate fertilizer.
